Réponse :
Explications étape par étape
A = 3/4 - 5/4 * 7/45
= 3/4 - 35/180
= 3/4 - 7/36
= 27/36 - 7/36
= 20/36
= 10/18
= 5/9
B = (5/6 - 5/4) / (5/8)
= (10/12 - 15/12) / (5/8)
= (-5/12) / (5/8)
= (-5/12) * (8/5)
= -40/60
= -4/6
= -2/3
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Réponse :
Explications étape par étape
A = 3/4 - 5/4 * 7/45
= 3/4 - 35/180
= 3/4 - 7/36
= 27/36 - 7/36
= 20/36
= 10/18
= 5/9
B = (5/6 - 5/4) / (5/8)
= (10/12 - 15/12) / (5/8)
= (-5/12) / (5/8)
= (-5/12) * (8/5)
= -40/60
= -4/6
= -2/3